./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dce9d71ca8bbe247a74e6b2653e5cdb882c6b8b5d902edf534df70d90ee806fe --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 23:33:22,994 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 23:33:23,059 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-11-28 23:33:23,063 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 23:33:23,064 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 23:33:23,087 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 23:33:23,088 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 23:33:23,089 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 23:33:23,089 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 23:33:23,090 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 23:33:23,091 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 23:33:23,091 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 23:33:23,092 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 23:33:23,092 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 23:33:23,093 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 23:33:23,093 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 23:33:23,094 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 23:33:23,094 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 23:33:23,095 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 23:33:23,095 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 23:33:23,095 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 23:33:23,096 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 23:33:23,097 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-28 23:33:23,097 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-28 23:33:23,097 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 23:33:23,098 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 23:33:23,098 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 23:33:23,099 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 23:33:23,099 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 23:33:23,099 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 23:33:23,100 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:33:23,100 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 23:33:23,100 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 23:33:23,101 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 23:33:23,101 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 23:33:23,101 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 23:33:23,101 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 23:33:23,102 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 23:33:23,102 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 23:33:23,102 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 23:33:23,102 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 23:33:23,102 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dce9d71ca8bbe247a74e6b2653e5cdb882c6b8b5d902edf534df70d90ee806fe [2023-11-28 23:33:23,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 23:33:23,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 23:33:23,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 23:33:23,340 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 23:33:23,341 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 23:33:23,342 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i [2023-11-28 23:33:26,053 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 23:33:26,299 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 23:33:26,299 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i [2023-11-28 23:33:26,317 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/data/02cc56187/3da2150564694d9aaed8fd899492b850/FLAG49a226f32 [2023-11-28 23:33:26,332 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/data/02cc56187/3da2150564694d9aaed8fd899492b850 [2023-11-28 23:33:26,334 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 23:33:26,336 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 23:33:26,337 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 23:33:26,337 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 23:33:26,343 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 23:33:26,343 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:33:26" (1/1) ... [2023-11-28 23:33:26,344 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2df74c29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:33:26, skipping insertion in model container [2023-11-28 23:33:26,345 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:33:26" (1/1) ... [2023-11-28 23:33:26,410 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 23:33:26,946 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:33:26,967 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 23:33:27,026 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:33:27,093 INFO L206 MainTranslator]: Completed translation [2023-11-28 23:33:27,093 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:33:27 WrapperNode [2023-11-28 23:33:27,093 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 23:33:27,095 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 23:33:27,095 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 23:33:27,095 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 23:33:27,103 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:33:27" (1/1) ... [2023-11-28 23:33:27,124 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:33:27" (1/1) ... [2023-11-28 23:33:27,159 INFO L138 Inliner]: procedures = 271, calls = 50, calls flagged for inlining = 7, calls inlined = 8, statements flattened = 288 [2023-11-28 23:33:27,160 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 23:33:27,161 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 23:33:27,161 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 23:33:27,161 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 23:33:27,171 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:33:27" (1/1) ... [2023-11-28 23:33:27,172 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:33:27" (1/1) ... [2023-11-28 23:33:27,179 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:33:27" (1/1) ... [2023-11-28 23:33:27,179 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:33:27" (1/1) ... [2023-11-28 23:33:27,199 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:33:27" (1/1) ... [2023-11-28 23:33:27,203 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:33:27" (1/1) ... [2023-11-28 23:33:27,206 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:33:27" (1/1) ... [2023-11-28 23:33:27,208 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:33:27" (1/1) ... [2023-11-28 23:33:27,213 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 23:33:27,214 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 23:33:27,214 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 23:33:27,214 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 23:33:27,215 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:33:27" (1/1) ... [2023-11-28 23:33:27,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:33:27,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:33:27,259 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 23:33:27,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 23:33:27,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-28 23:33:27,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-28 23:33:27,288 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-28 23:33:27,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-28 23:33:27,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-28 23:33:27,288 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-28 23:33:27,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 23:33:27,289 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-28 23:33:27,289 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-28 23:33:27,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-28 23:33:27,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 23:33:27,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 23:33:27,290 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-28 23:33:27,428 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 23:33:27,430 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 23:33:27,849 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 23:33:27,887 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 23:33:27,888 INFO L309 CfgBuilder]: Removed 23 assume(true) statements. [2023-11-28 23:33:27,889 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:33:27 BoogieIcfgContainer [2023-11-28 23:33:27,890 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 23:33:27,892 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 23:33:27,892 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 23:33:27,895 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 23:33:27,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:33:26" (1/3) ... [2023-11-28 23:33:27,896 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce78237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:33:27, skipping insertion in model container [2023-11-28 23:33:27,896 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:33:27" (2/3) ... [2023-11-28 23:33:27,896 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce78237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:33:27, skipping insertion in model container [2023-11-28 23:33:27,896 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:33:27" (3/3) ... [2023-11-28 23:33:27,897 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_77-tricky_address4_racing.i [2023-11-28 23:33:27,904 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-28 23:33:27,913 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 23:33:27,913 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-28 23:33:27,913 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-28 23:33:27,989 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-28 23:33:28,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 263 places, 293 transitions, 593 flow [2023-11-28 23:33:28,155 INFO L124 PetriNetUnfolderBase]: 48/416 cut-off events. [2023-11-28 23:33:28,155 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-28 23:33:28,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 416 events. 48/416 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1719 event pairs, 0 based on Foata normal form. 0/348 useless extension candidates. Maximal degree in co-relation 245. Up to 8 conditions per place. [2023-11-28 23:33:28,165 INFO L82 GeneralOperation]: Start removeDead. Operand has 263 places, 293 transitions, 593 flow [2023-11-28 23:33:28,174 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 263 places, 293 transitions, 593 flow [2023-11-28 23:33:28,183 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 23:33:28,189 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@59df5e6b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 23:33:28,190 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-28 23:33:28,206 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-28 23:33:28,207 INFO L124 PetriNetUnfolderBase]: 12/123 cut-off events. [2023-11-28 23:33:28,207 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-28 23:33:28,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:33:28,208 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:33:28,208 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-28 23:33:28,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:33:28,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1694843813, now seen corresponding path program 1 times [2023-11-28 23:33:28,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:33:28,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083894121] [2023-11-28 23:33:28,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:33:28,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:33:28,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:33:28,518 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-28 23:33:28,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:33:28,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083894121] [2023-11-28 23:33:28,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083894121] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:33:28,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:33:28,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:33:28,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989632632] [2023-11-28 23:33:28,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:33:28,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:33:28,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:33:28,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:33:28,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:33:28,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 293 [2023-11-28 23:33:28,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 293 transitions, 593 flow. Second operand has 3 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:28,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:33:28,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 293 [2023-11-28 23:33:28,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:33:28,892 INFO L124 PetriNetUnfolderBase]: 85/1240 cut-off events. [2023-11-28 23:33:28,892 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-28 23:33:28,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1424 conditions, 1240 events. 85/1240 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8433 event pairs, 72 based on Foata normal form. 208/1336 useless extension candidates. Maximal degree in co-relation 1245. Up to 178 conditions per place. [2023-11-28 23:33:28,905 INFO L140 encePairwiseOnDemand]: 261/293 looper letters, 23 selfloop transitions, 2 changer transitions 1/259 dead transitions. [2023-11-28 23:33:28,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 259 transitions, 575 flow [2023-11-28 23:33:28,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:33:28,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:33:28,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 770 transitions. [2023-11-28 23:33:28,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.875995449374289 [2023-11-28 23:33:28,924 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 770 transitions. [2023-11-28 23:33:28,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 770 transitions. [2023-11-28 23:33:28,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:33:28,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 770 transitions. [2023-11-28 23:33:28,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 256.6666666666667) internal successors, (770), 3 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:28,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:28,944 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:28,946 INFO L175 Difference]: Start difference. First operand has 263 places, 293 transitions, 593 flow. Second operand 3 states and 770 transitions. [2023-11-28 23:33:28,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 259 transitions, 575 flow [2023-11-28 23:33:28,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 259 transitions, 575 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-28 23:33:28,981 INFO L231 Difference]: Finished difference. Result has 260 places, 258 transitions, 533 flow [2023-11-28 23:33:28,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=533, PETRI_PLACES=260, PETRI_TRANSITIONS=258} [2023-11-28 23:33:28,988 INFO L281 CegarLoopForPetriNet]: 263 programPoint places, -3 predicate places. [2023-11-28 23:33:28,988 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 258 transitions, 533 flow [2023-11-28 23:33:28,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:28,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:33:28,990 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:33:28,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-28 23:33:28,991 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-28 23:33:28,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:33:28,992 INFO L85 PathProgramCache]: Analyzing trace with hash -748623694, now seen corresponding path program 1 times [2023-11-28 23:33:28,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:33:28,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573493095] [2023-11-28 23:33:28,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:33:28,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:33:29,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:33:29,142 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-28 23:33:29,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:33:29,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573493095] [2023-11-28 23:33:29,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573493095] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:33:29,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215163578] [2023-11-28 23:33:29,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:33:29,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:33:29,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:33:29,155 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:33:29,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-28 23:33:29,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:33:29,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 23:33:29,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:33:29,337 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-28 23:33:29,337 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:33:29,379 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-28 23:33:29,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215163578] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:33:29,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:33:29,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-28 23:33:29,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293809738] [2023-11-28 23:33:29,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:33:29,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-28 23:33:29,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:33:29,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-28 23:33:29,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-28 23:33:29,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 293 [2023-11-28 23:33:29,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 258 transitions, 533 flow. Second operand has 10 states, 10 states have (on average 236.9) internal successors, (2369), 10 states have internal predecessors, (2369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:29,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:33:29,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 293 [2023-11-28 23:33:29,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:33:29,766 INFO L124 PetriNetUnfolderBase]: 85/1246 cut-off events. [2023-11-28 23:33:29,766 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-28 23:33:29,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1449 conditions, 1246 events. 85/1246 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8402 event pairs, 72 based on Foata normal form. 2/1137 useless extension candidates. Maximal degree in co-relation 1413. Up to 178 conditions per place. [2023-11-28 23:33:29,775 INFO L140 encePairwiseOnDemand]: 287/293 looper letters, 27 selfloop transitions, 9 changer transitions 0/266 dead transitions. [2023-11-28 23:33:29,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 266 transitions, 623 flow [2023-11-28 23:33:29,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-28 23:33:29,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-28 23:33:29,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2153 transitions. [2023-11-28 23:33:29,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8164580963215775 [2023-11-28 23:33:29,783 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2153 transitions. [2023-11-28 23:33:29,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2153 transitions. [2023-11-28 23:33:29,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:33:29,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2153 transitions. [2023-11-28 23:33:29,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 239.22222222222223) internal successors, (2153), 9 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:29,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 293.0) internal successors, (2930), 10 states have internal predecessors, (2930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:29,802 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 293.0) internal successors, (2930), 10 states have internal predecessors, (2930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:29,802 INFO L175 Difference]: Start difference. First operand has 260 places, 258 transitions, 533 flow. Second operand 9 states and 2153 transitions. [2023-11-28 23:33:29,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 266 transitions, 623 flow [2023-11-28 23:33:29,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 266 transitions, 621 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 23:33:29,809 INFO L231 Difference]: Finished difference. Result has 269 places, 264 transitions, 581 flow [2023-11-28 23:33:29,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=581, PETRI_PLACES=269, PETRI_TRANSITIONS=264} [2023-11-28 23:33:29,811 INFO L281 CegarLoopForPetriNet]: 263 programPoint places, 6 predicate places. [2023-11-28 23:33:29,811 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 264 transitions, 581 flow [2023-11-28 23:33:29,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 236.9) internal successors, (2369), 10 states have internal predecessors, (2369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:29,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:33:29,814 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:33:29,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-28 23:33:30,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-28 23:33:30,019 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-28 23:33:30,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:33:30,020 INFO L85 PathProgramCache]: Analyzing trace with hash -305936814, now seen corresponding path program 2 times [2023-11-28 23:33:30,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:33:30,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521494380] [2023-11-28 23:33:30,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:33:30,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:33:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:33:30,199 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-28 23:33:30,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:33:30,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521494380] [2023-11-28 23:33:30,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521494380] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:33:30,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578996560] [2023-11-28 23:33:30,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:33:30,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:33:30,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:33:30,202 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:33:30,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-28 23:33:30,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 23:33:30,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:33:30,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-28 23:33:30,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:33:30,361 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-28 23:33:30,361 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:33:30,461 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-28 23:33:30,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578996560] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:33:30,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:33:30,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-28 23:33:30,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924073978] [2023-11-28 23:33:30,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:33:30,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-28 23:33:30,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:33:30,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-28 23:33:30,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-28 23:33:30,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 293 [2023-11-28 23:33:30,518 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 264 transitions, 581 flow. Second operand has 18 states, 18 states have (on average 236.94444444444446) internal successors, (4265), 18 states have internal predecessors, (4265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:30,518 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:33:30,518 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 293 [2023-11-28 23:33:30,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:33:30,981 INFO L124 PetriNetUnfolderBase]: 85/1266 cut-off events. [2023-11-28 23:33:30,981 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-11-28 23:33:30,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1534 conditions, 1266 events. 85/1266 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8372 event pairs, 72 based on Foata normal form. 4/1159 useless extension candidates. Maximal degree in co-relation 1391. Up to 178 conditions per place. [2023-11-28 23:33:30,991 INFO L140 encePairwiseOnDemand]: 287/293 looper letters, 31 selfloop transitions, 21 changer transitions 0/282 dead transitions. [2023-11-28 23:33:30,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 282 transitions, 781 flow [2023-11-28 23:33:30,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-28 23:33:30,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-28 23:33:31,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4991 transitions. [2023-11-28 23:33:31,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8111490329920364 [2023-11-28 23:33:31,005 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4991 transitions. [2023-11-28 23:33:31,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4991 transitions. [2023-11-28 23:33:31,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:33:31,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4991 transitions. [2023-11-28 23:33:31,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 237.66666666666666) internal successors, (4991), 21 states have internal predecessors, (4991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:31,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 293.0) internal successors, (6446), 22 states have internal predecessors, (6446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:31,041 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 293.0) internal successors, (6446), 22 states have internal predecessors, (6446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:31,041 INFO L175 Difference]: Start difference. First operand has 269 places, 264 transitions, 581 flow. Second operand 21 states and 4991 transitions. [2023-11-28 23:33:31,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 282 transitions, 781 flow [2023-11-28 23:33:31,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 282 transitions, 767 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-28 23:33:31,051 INFO L231 Difference]: Finished difference. Result has 293 places, 277 transitions, 705 flow [2023-11-28 23:33:31,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=705, PETRI_PLACES=293, PETRI_TRANSITIONS=277} [2023-11-28 23:33:31,052 INFO L281 CegarLoopForPetriNet]: 263 programPoint places, 30 predicate places. [2023-11-28 23:33:31,052 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 277 transitions, 705 flow [2023-11-28 23:33:31,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 236.94444444444446) internal successors, (4265), 18 states have internal predecessors, (4265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:31,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:33:31,055 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:33:31,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-28 23:33:31,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-28 23:33:31,256 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-28 23:33:31,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:33:31,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1943136658, now seen corresponding path program 3 times [2023-11-28 23:33:31,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:33:31,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615704421] [2023-11-28 23:33:31,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:33:31,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:33:31,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:33:31,605 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-28 23:33:31,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:33:31,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615704421] [2023-11-28 23:33:31,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615704421] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:33:31,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496866926] [2023-11-28 23:33:31,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-28 23:33:31,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:33:31,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:33:31,607 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:33:31,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-28 23:33:31,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-11-28 23:33:31,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:33:31,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-28 23:33:31,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:33:31,828 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-28 23:33:31,829 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:33:32,045 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-28 23:33:32,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496866926] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:33:32,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:33:32,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2023-11-28 23:33:32,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879396797] [2023-11-28 23:33:32,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:33:32,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-28 23:33:32,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:33:32,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-28 23:33:32,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-11-28 23:33:32,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 293 [2023-11-28 23:33:32,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 277 transitions, 705 flow. Second operand has 23 states, 23 states have (on average 237.04347826086956) internal successors, (5452), 23 states have internal predecessors, (5452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:32,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:33:32,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 293 [2023-11-28 23:33:32,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:33:32,693 INFO L124 PetriNetUnfolderBase]: 85/1281 cut-off events. [2023-11-28 23:33:32,693 INFO L125 PetriNetUnfolderBase]: For 133/133 co-relation queries the response was YES. [2023-11-28 23:33:32,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1632 conditions, 1281 events. 85/1281 cut-off events. For 133/133 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8425 event pairs, 72 based on Foata normal form. 3/1173 useless extension candidates. Maximal degree in co-relation 1395. Up to 178 conditions per place. [2023-11-28 23:33:32,703 INFO L140 encePairwiseOnDemand]: 287/293 looper letters, 34 selfloop transitions, 30 changer transitions 0/294 dead transitions. [2023-11-28 23:33:32,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 294 transitions, 961 flow [2023-11-28 23:33:32,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-28 23:33:32,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-28 23:33:32,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7117 transitions. [2023-11-28 23:33:32,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.80967007963595 [2023-11-28 23:33:32,725 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 7117 transitions. [2023-11-28 23:33:32,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 7117 transitions. [2023-11-28 23:33:32,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:33:32,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 7117 transitions. [2023-11-28 23:33:32,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 237.23333333333332) internal successors, (7117), 30 states have internal predecessors, (7117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:32,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 293.0) internal successors, (9083), 31 states have internal predecessors, (9083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:32,778 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 293.0) internal successors, (9083), 31 states have internal predecessors, (9083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:32,778 INFO L175 Difference]: Start difference. First operand has 293 places, 277 transitions, 705 flow. Second operand 30 states and 7117 transitions. [2023-11-28 23:33:32,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 294 transitions, 961 flow [2023-11-28 23:33:32,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 294 transitions, 931 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-11-28 23:33:32,789 INFO L231 Difference]: Finished difference. Result has 320 places, 287 transitions, 833 flow [2023-11-28 23:33:32,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=681, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=833, PETRI_PLACES=320, PETRI_TRANSITIONS=287} [2023-11-28 23:33:32,790 INFO L281 CegarLoopForPetriNet]: 263 programPoint places, 57 predicate places. [2023-11-28 23:33:32,791 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 287 transitions, 833 flow [2023-11-28 23:33:32,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 237.04347826086956) internal successors, (5452), 23 states have internal predecessors, (5452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:32,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:33:32,793 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:33:32,800 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-28 23:33:32,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:33:33,000 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-11-28 23:33:33,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:33:33,000 INFO L85 PathProgramCache]: Analyzing trace with hash -2040290245, now seen corresponding path program 4 times [2023-11-28 23:33:33,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:33:33,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597788949] [2023-11-28 23:33:33,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:33:33,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:33:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-28 23:33:33,043 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-28 23:33:33,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-28 23:33:33,098 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-28 23:33:33,099 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-28 23:33:33,100 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-28 23:33:33,101 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2023-11-28 23:33:33,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2023-11-28 23:33:33,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2023-11-28 23:33:33,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2023-11-28 23:33:33,102 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2023-11-28 23:33:33,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2023-11-28 23:33:33,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2023-11-28 23:33:33,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2023-11-28 23:33:33,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2023-11-28 23:33:33,103 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2023-11-28 23:33:33,104 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2023-11-28 23:33:33,104 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2023-11-28 23:33:33,104 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2023-11-28 23:33:33,104 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2023-11-28 23:33:33,104 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2023-11-28 23:33:33,105 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2023-11-28 23:33:33,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-28 23:33:33,105 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1] [2023-11-28 23:33:33,108 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-28 23:33:33,108 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-28 23:33:33,169 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-28 23:33:33,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 369 places, 412 transitions, 840 flow [2023-11-28 23:33:33,320 INFO L124 PetriNetUnfolderBase]: 80/690 cut-off events. [2023-11-28 23:33:33,321 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2023-11-28 23:33:33,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 702 conditions, 690 events. 80/690 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3529 event pairs, 0 based on Foata normal form. 0/577 useless extension candidates. Maximal degree in co-relation 418. Up to 12 conditions per place. [2023-11-28 23:33:33,331 INFO L82 GeneralOperation]: Start removeDead. Operand has 369 places, 412 transitions, 840 flow [2023-11-28 23:33:33,341 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 369 places, 412 transitions, 840 flow [2023-11-28 23:33:33,342 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 23:33:33,343 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@59df5e6b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 23:33:33,344 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-28 23:33:33,353 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-28 23:33:33,353 INFO L124 PetriNetUnfolderBase]: 12/127 cut-off events. [2023-11-28 23:33:33,354 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-28 23:33:33,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:33:33,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:33:33,354 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-28 23:33:33,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:33:33,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1710603514, now seen corresponding path program 1 times [2023-11-28 23:33:33,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:33:33,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463801442] [2023-11-28 23:33:33,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:33:33,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:33:33,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:33:33,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:33:33,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:33:33,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463801442] [2023-11-28 23:33:33,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463801442] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:33:33,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:33:33,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:33:33,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140720025] [2023-11-28 23:33:33,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:33:33,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:33:33,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:33:33,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:33:33,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:33:33,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 333 out of 412 [2023-11-28 23:33:33,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 412 transitions, 840 flow. Second operand has 3 states, 3 states have (on average 335.3333333333333) internal successors, (1006), 3 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:33,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:33:33,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 333 of 412 [2023-11-28 23:33:33,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:33:35,557 INFO L124 PetriNetUnfolderBase]: 1577/11992 cut-off events. [2023-11-28 23:33:35,557 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2023-11-28 23:33:35,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14453 conditions, 11992 events. 1577/11992 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 145095 event pairs, 1464 based on Foata normal form. 2900/13847 useless extension candidates. Maximal degree in co-relation 1627. Up to 2408 conditions per place. [2023-11-28 23:33:35,650 INFO L140 encePairwiseOnDemand]: 367/412 looper letters, 33 selfloop transitions, 2 changer transitions 1/362 dead transitions. [2023-11-28 23:33:35,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 362 transitions, 810 flow [2023-11-28 23:33:35,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:33:35,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:33:35,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1078 transitions. [2023-11-28 23:33:35,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.872168284789644 [2023-11-28 23:33:35,653 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1078 transitions. [2023-11-28 23:33:35,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1078 transitions. [2023-11-28 23:33:35,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:33:35,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1078 transitions. [2023-11-28 23:33:35,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 359.3333333333333) internal successors, (1078), 3 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:35,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 412.0) internal successors, (1648), 4 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:35,659 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 412.0) internal successors, (1648), 4 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:35,659 INFO L175 Difference]: Start difference. First operand has 369 places, 412 transitions, 840 flow. Second operand 3 states and 1078 transitions. [2023-11-28 23:33:35,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 362 transitions, 810 flow [2023-11-28 23:33:35,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 362 transitions, 810 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-28 23:33:35,666 INFO L231 Difference]: Finished difference. Result has 363 places, 361 transitions, 748 flow [2023-11-28 23:33:35,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=748, PETRI_PLACES=363, PETRI_TRANSITIONS=361} [2023-11-28 23:33:35,667 INFO L281 CegarLoopForPetriNet]: 369 programPoint places, -6 predicate places. [2023-11-28 23:33:35,667 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 361 transitions, 748 flow [2023-11-28 23:33:35,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 335.3333333333333) internal successors, (1006), 3 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:35,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:33:35,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:33:35,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-28 23:33:35,669 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-28 23:33:35,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:33:35,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1066178556, now seen corresponding path program 1 times [2023-11-28 23:33:35,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:33:35,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476698214] [2023-11-28 23:33:35,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:33:35,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:33:35,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:33:35,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:33:35,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:33:35,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476698214] [2023-11-28 23:33:35,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476698214] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:33:35,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035861919] [2023-11-28 23:33:35,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:33:35,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:33:35,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:33:35,732 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:33:35,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-28 23:33:35,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:33:35,821 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-28 23:33:35,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:33:35,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:33:35,832 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:33:35,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035861919] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:33:35,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:33:35,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-28 23:33:35,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716514612] [2023-11-28 23:33:35,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:33:35,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:33:35,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:33:35,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:33:35,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:33:35,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 333 out of 412 [2023-11-28 23:33:35,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 361 transitions, 748 flow. Second operand has 3 states, 3 states have (on average 335.0) internal successors, (1005), 3 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:35,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:33:35,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 333 of 412 [2023-11-28 23:33:35,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:33:37,698 INFO L124 PetriNetUnfolderBase]: 2032/13113 cut-off events. [2023-11-28 23:33:37,698 INFO L125 PetriNetUnfolderBase]: For 170/170 co-relation queries the response was YES. [2023-11-28 23:33:37,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16295 conditions, 13113 events. 2032/13113 cut-off events. For 170/170 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 161246 event pairs, 1912 based on Foata normal form. 1/11891 useless extension candidates. Maximal degree in co-relation 16262. Up to 3113 conditions per place. [2023-11-28 23:33:37,777 INFO L140 encePairwiseOnDemand]: 409/412 looper letters, 41 selfloop transitions, 2 changer transitions 0/370 dead transitions. [2023-11-28 23:33:37,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 370 transitions, 852 flow [2023-11-28 23:33:37,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:33:37,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:33:37,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1043 transitions. [2023-11-28 23:33:37,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8438511326860841 [2023-11-28 23:33:37,780 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1043 transitions. [2023-11-28 23:33:37,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1043 transitions. [2023-11-28 23:33:37,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:33:37,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1043 transitions. [2023-11-28 23:33:37,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 347.6666666666667) internal successors, (1043), 3 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:37,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 412.0) internal successors, (1648), 4 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:37,786 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 412.0) internal successors, (1648), 4 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:37,786 INFO L175 Difference]: Start difference. First operand has 363 places, 361 transitions, 748 flow. Second operand 3 states and 1043 transitions. [2023-11-28 23:33:37,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 370 transitions, 852 flow [2023-11-28 23:33:37,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 370 transitions, 850 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 23:33:37,795 INFO L231 Difference]: Finished difference. Result has 364 places, 362 transitions, 758 flow [2023-11-28 23:33:37,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=758, PETRI_PLACES=364, PETRI_TRANSITIONS=362} [2023-11-28 23:33:37,796 INFO L281 CegarLoopForPetriNet]: 369 programPoint places, -5 predicate places. [2023-11-28 23:33:37,797 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 362 transitions, 758 flow [2023-11-28 23:33:37,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 335.0) internal successors, (1005), 3 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:37,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:33:37,797 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:33:37,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-28 23:33:37,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:33:37,998 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-28 23:33:37,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:33:37,999 INFO L85 PathProgramCache]: Analyzing trace with hash -570318443, now seen corresponding path program 1 times [2023-11-28 23:33:37,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:33:37,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304618340] [2023-11-28 23:33:38,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:33:38,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:33:38,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:33:38,086 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-28 23:33:38,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:33:38,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304618340] [2023-11-28 23:33:38,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304618340] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:33:38,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646214168] [2023-11-28 23:33:38,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:33:38,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:33:38,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:33:38,091 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:33:38,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-28 23:33:38,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:33:38,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 23:33:38,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:33:38,230 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-28 23:33:38,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:33:38,263 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-28 23:33:38,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646214168] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:33:38,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:33:38,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-28 23:33:38,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781185936] [2023-11-28 23:33:38,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:33:38,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-28 23:33:38,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:33:38,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-28 23:33:38,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-28 23:33:38,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 330 out of 412 [2023-11-28 23:33:38,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 362 transitions, 758 flow. Second operand has 10 states, 10 states have (on average 332.0) internal successors, (3320), 10 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:38,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:33:38,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 330 of 412 [2023-11-28 23:33:38,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:33:40,370 INFO L124 PetriNetUnfolderBase]: 1575/11912 cut-off events. [2023-11-28 23:33:40,370 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2023-11-28 23:33:40,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14406 conditions, 11912 events. 1575/11912 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 144778 event pairs, 1464 based on Foata normal form. 2/10888 useless extension candidates. Maximal degree in co-relation 14342. Up to 2400 conditions per place. [2023-11-28 23:33:40,444 INFO L140 encePairwiseOnDemand]: 406/412 looper letters, 37 selfloop transitions, 9 changer transitions 0/370 dead transitions. [2023-11-28 23:33:40,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 370 transitions, 868 flow [2023-11-28 23:33:40,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-28 23:33:40,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-28 23:33:40,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3018 transitions. [2023-11-28 23:33:40,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.813915857605178 [2023-11-28 23:33:40,454 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3018 transitions. [2023-11-28 23:33:40,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3018 transitions. [2023-11-28 23:33:40,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:33:40,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3018 transitions. [2023-11-28 23:33:40,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 335.3333333333333) internal successors, (3018), 9 states have internal predecessors, (3018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:40,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 412.0) internal successors, (4120), 10 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:40,469 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 412.0) internal successors, (4120), 10 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:40,469 INFO L175 Difference]: Start difference. First operand has 364 places, 362 transitions, 758 flow. Second operand 9 states and 3018 transitions. [2023-11-28 23:33:40,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 370 transitions, 868 flow [2023-11-28 23:33:40,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 370 transitions, 866 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 23:33:40,478 INFO L231 Difference]: Finished difference. Result has 374 places, 368 transitions, 806 flow [2023-11-28 23:33:40,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=756, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=806, PETRI_PLACES=374, PETRI_TRANSITIONS=368} [2023-11-28 23:33:40,480 INFO L281 CegarLoopForPetriNet]: 369 programPoint places, 5 predicate places. [2023-11-28 23:33:40,480 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 368 transitions, 806 flow [2023-11-28 23:33:40,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 332.0) internal successors, (3320), 10 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:40,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:33:40,481 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:33:40,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-28 23:33:40,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:33:40,682 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-28 23:33:40,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:33:40,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1033534027, now seen corresponding path program 2 times [2023-11-28 23:33:40,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:33:40,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737905066] [2023-11-28 23:33:40,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:33:40,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:33:40,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:33:40,801 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-28 23:33:40,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:33:40,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737905066] [2023-11-28 23:33:40,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737905066] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:33:40,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000323797] [2023-11-28 23:33:40,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:33:40,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:33:40,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:33:40,804 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:33:40,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-28 23:33:40,901 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 23:33:40,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:33:40,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-28 23:33:40,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:33:40,945 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-28 23:33:40,945 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:33:41,030 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-28 23:33:41,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000323797] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:33:41,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:33:41,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-28 23:33:41,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040950044] [2023-11-28 23:33:41,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:33:41,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-28 23:33:41,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:33:41,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-28 23:33:41,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-28 23:33:41,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 330 out of 412 [2023-11-28 23:33:41,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 368 transitions, 806 flow. Second operand has 18 states, 18 states have (on average 332.0) internal successors, (5976), 18 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:41,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:33:41,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 330 of 412 [2023-11-28 23:33:41,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:33:43,207 INFO L124 PetriNetUnfolderBase]: 1575/11932 cut-off events. [2023-11-28 23:33:43,207 INFO L125 PetriNetUnfolderBase]: For 125/125 co-relation queries the response was YES. [2023-11-28 23:33:43,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14491 conditions, 11932 events. 1575/11932 cut-off events. For 125/125 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 144734 event pairs, 1464 based on Foata normal form. 4/10910 useless extension candidates. Maximal degree in co-relation 14346. Up to 2400 conditions per place. [2023-11-28 23:33:43,295 INFO L140 encePairwiseOnDemand]: 406/412 looper letters, 41 selfloop transitions, 21 changer transitions 0/386 dead transitions. [2023-11-28 23:33:43,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 386 transitions, 1026 flow [2023-11-28 23:33:43,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-28 23:33:43,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-28 23:33:43,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 6996 transitions. [2023-11-28 23:33:43,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8085991678224688 [2023-11-28 23:33:43,311 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 6996 transitions. [2023-11-28 23:33:43,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 6996 transitions. [2023-11-28 23:33:43,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:33:43,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 6996 transitions. [2023-11-28 23:33:43,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 333.14285714285717) internal successors, (6996), 21 states have internal predecessors, (6996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:43,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 412.0) internal successors, (9064), 22 states have internal predecessors, (9064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:43,346 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 412.0) internal successors, (9064), 22 states have internal predecessors, (9064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:43,347 INFO L175 Difference]: Start difference. First operand has 374 places, 368 transitions, 806 flow. Second operand 21 states and 6996 transitions. [2023-11-28 23:33:43,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 386 transitions, 1026 flow [2023-11-28 23:33:43,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 386 transitions, 1012 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-28 23:33:43,356 INFO L231 Difference]: Finished difference. Result has 398 places, 381 transitions, 930 flow [2023-11-28 23:33:43,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=930, PETRI_PLACES=398, PETRI_TRANSITIONS=381} [2023-11-28 23:33:43,357 INFO L281 CegarLoopForPetriNet]: 369 programPoint places, 29 predicate places. [2023-11-28 23:33:43,358 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 381 transitions, 930 flow [2023-11-28 23:33:43,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 332.0) internal successors, (5976), 18 states have internal predecessors, (5976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:43,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:33:43,359 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:33:43,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-28 23:33:43,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:33:43,560 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-28 23:33:43,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:33:43,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1250208267, now seen corresponding path program 3 times [2023-11-28 23:33:43,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:33:43,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336882571] [2023-11-28 23:33:43,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:33:43,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:33:43,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:33:43,850 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-28 23:33:43,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:33:43,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336882571] [2023-11-28 23:33:43,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336882571] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:33:43,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979858861] [2023-11-28 23:33:43,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-28 23:33:43,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:33:43,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:33:43,852 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:33:43,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-28 23:33:44,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-11-28 23:33:44,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:33:44,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-28 23:33:44,017 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:33:44,095 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-28 23:33:44,095 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:33:44,277 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-28 23:33:44,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979858861] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:33:44,277 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:33:44,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2023-11-28 23:33:44,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859858780] [2023-11-28 23:33:44,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:33:44,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-28 23:33:44,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:33:44,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-28 23:33:44,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-11-28 23:33:44,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 330 out of 412 [2023-11-28 23:33:44,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 381 transitions, 930 flow. Second operand has 23 states, 23 states have (on average 332.0869565217391) internal successors, (7638), 23 states have internal predecessors, (7638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:44,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:33:44,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 330 of 412 [2023-11-28 23:33:44,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:33:46,730 INFO L124 PetriNetUnfolderBase]: 1575/11947 cut-off events. [2023-11-28 23:33:46,731 INFO L125 PetriNetUnfolderBase]: For 226/226 co-relation queries the response was YES. [2023-11-28 23:33:46,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14589 conditions, 11947 events. 1575/11947 cut-off events. For 226/226 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 144609 event pairs, 1464 based on Foata normal form. 3/10924 useless extension candidates. Maximal degree in co-relation 14350. Up to 2400 conditions per place. [2023-11-28 23:33:46,808 INFO L140 encePairwiseOnDemand]: 406/412 looper letters, 44 selfloop transitions, 30 changer transitions 0/398 dead transitions. [2023-11-28 23:33:46,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 398 transitions, 1206 flow [2023-11-28 23:33:46,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-28 23:33:46,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-11-28 23:33:46,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 9977 transitions. [2023-11-28 23:33:46,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8072006472491909 [2023-11-28 23:33:46,822 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 9977 transitions. [2023-11-28 23:33:46,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 9977 transitions. [2023-11-28 23:33:46,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:33:46,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 9977 transitions. [2023-11-28 23:33:46,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 332.56666666666666) internal successors, (9977), 30 states have internal predecessors, (9977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:46,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 412.0) internal successors, (12772), 31 states have internal predecessors, (12772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:46,864 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 412.0) internal successors, (12772), 31 states have internal predecessors, (12772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:46,864 INFO L175 Difference]: Start difference. First operand has 398 places, 381 transitions, 930 flow. Second operand 30 states and 9977 transitions. [2023-11-28 23:33:46,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 398 transitions, 1206 flow [2023-11-28 23:33:46,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 398 transitions, 1176 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-11-28 23:33:46,875 INFO L231 Difference]: Finished difference. Result has 425 places, 391 transitions, 1058 flow [2023-11-28 23:33:46,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=412, PETRI_DIFFERENCE_MINUEND_FLOW=906, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1058, PETRI_PLACES=425, PETRI_TRANSITIONS=391} [2023-11-28 23:33:46,876 INFO L281 CegarLoopForPetriNet]: 369 programPoint places, 56 predicate places. [2023-11-28 23:33:46,877 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 391 transitions, 1058 flow [2023-11-28 23:33:46,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 332.0869565217391) internal successors, (7638), 23 states have internal predecessors, (7638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:46,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:33:46,879 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:33:46,884 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-28 23:33:47,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:33:47,079 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2023-11-28 23:33:47,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:33:47,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1814245950, now seen corresponding path program 4 times [2023-11-28 23:33:47,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:33:47,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542792578] [2023-11-28 23:33:47,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:33:47,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:33:47,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-28 23:33:47,112 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-28 23:33:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-28 23:33:47,146 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-28 23:33:47,146 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-28 23:33:47,146 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-11-28 23:33:47,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-11-28 23:33:47,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-11-28 23:33:47,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-11-28 23:33:47,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-11-28 23:33:47,147 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-11-28 23:33:47,148 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-11-28 23:33:47,148 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-11-28 23:33:47,148 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-11-28 23:33:47,148 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-11-28 23:33:47,148 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-11-28 23:33:47,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-11-28 23:33:47,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-11-28 23:33:47,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-11-28 23:33:47,149 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-11-28 23:33:47,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-11-28 23:33:47,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-11-28 23:33:47,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-11-28 23:33:47,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-11-28 23:33:47,150 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-11-28 23:33:47,151 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-11-28 23:33:47,151 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-11-28 23:33:47,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-28 23:33:47,151 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2023-11-28 23:33:47,152 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-28 23:33:47,152 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-28 23:33:47,223 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-28 23:33:47,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 475 places, 531 transitions, 1089 flow [2023-11-28 23:33:47,420 INFO L124 PetriNetUnfolderBase]: 117/1011 cut-off events. [2023-11-28 23:33:47,420 INFO L125 PetriNetUnfolderBase]: For 19/22 co-relation queries the response was YES. [2023-11-28 23:33:47,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1036 conditions, 1011 events. 117/1011 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 5803 event pairs, 1 based on Foata normal form. 0/847 useless extension candidates. Maximal degree in co-relation 698. Up to 16 conditions per place. [2023-11-28 23:33:47,438 INFO L82 GeneralOperation]: Start removeDead. Operand has 475 places, 531 transitions, 1089 flow [2023-11-28 23:33:47,447 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 475 places, 531 transitions, 1089 flow [2023-11-28 23:33:47,448 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 23:33:47,448 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@59df5e6b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 23:33:47,448 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2023-11-28 23:33:47,454 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-28 23:33:47,454 INFO L124 PetriNetUnfolderBase]: 12/127 cut-off events. [2023-11-28 23:33:47,454 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-28 23:33:47,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:33:47,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:33:47,454 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-28 23:33:47,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:33:47,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1847944186, now seen corresponding path program 1 times [2023-11-28 23:33:47,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:33:47,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527217734] [2023-11-28 23:33:47,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:33:47,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:33:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:33:47,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:33:47,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:33:47,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527217734] [2023-11-28 23:33:47,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527217734] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:33:47,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:33:47,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:33:47,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828164205] [2023-11-28 23:33:47,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:33:47,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:33:47,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:33:47,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:33:47,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 23:33:47,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 428 out of 531 [2023-11-28 23:33:47,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 531 transitions, 1089 flow. Second operand has 3 states, 3 states have (on average 430.3333333333333) internal successors, (1291), 3 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:33:47,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:33:47,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 428 of 531 [2023-11-28 23:33:47,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:34:08,539 INFO L124 PetriNetUnfolderBase]: 22024/117669 cut-off events. [2023-11-28 23:34:08,539 INFO L125 PetriNetUnfolderBase]: For 1657/1657 co-relation queries the response was YES. [2023-11-28 23:34:09,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148004 conditions, 117669 events. 22024/117669 cut-off events. For 1657/1657 co-relation queries the response was YES. Maximal size of possible extension queue 2336. Compared 1951423 event pairs, 21001 based on Foata normal form. 35968/144015 useless extension candidates. Maximal degree in co-relation 14440. Up to 29677 conditions per place. [2023-11-28 23:34:10,086 INFO L140 encePairwiseOnDemand]: 473/531 looper letters, 43 selfloop transitions, 2 changer transitions 1/465 dead transitions. [2023-11-28 23:34:10,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 465 transitions, 1047 flow [2023-11-28 23:34:10,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:34:10,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:34:10,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1386 transitions. [2023-11-28 23:34:10,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8700564971751412 [2023-11-28 23:34:10,089 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1386 transitions. [2023-11-28 23:34:10,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1386 transitions. [2023-11-28 23:34:10,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:34:10,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1386 transitions. [2023-11-28 23:34:10,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 462.0) internal successors, (1386), 3 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:10,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:10,092 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:10,092 INFO L175 Difference]: Start difference. First operand has 475 places, 531 transitions, 1089 flow. Second operand 3 states and 1386 transitions. [2023-11-28 23:34:10,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 465 transitions, 1047 flow [2023-11-28 23:34:10,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 465 transitions, 1047 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-28 23:34:10,100 INFO L231 Difference]: Finished difference. Result has 466 places, 464 transitions, 965 flow [2023-11-28 23:34:10,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=955, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=965, PETRI_PLACES=466, PETRI_TRANSITIONS=464} [2023-11-28 23:34:10,101 INFO L281 CegarLoopForPetriNet]: 475 programPoint places, -9 predicate places. [2023-11-28 23:34:10,101 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 464 transitions, 965 flow [2023-11-28 23:34:10,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 430.3333333333333) internal successors, (1291), 3 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:10,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:34:10,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:34:10,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-28 23:34:10,102 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-28 23:34:10,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:34:10,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1328447524, now seen corresponding path program 1 times [2023-11-28 23:34:10,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:34:10,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054966007] [2023-11-28 23:34:10,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:34:10,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:34:10,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:34:10,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:34:10,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:34:10,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054966007] [2023-11-28 23:34:10,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054966007] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:34:10,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849460347] [2023-11-28 23:34:10,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:34:10,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:34:10,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:34:10,162 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:34:10,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-28 23:34:10,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:34:10,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-28 23:34:10,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:34:10,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:34:10,290 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:34:10,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849460347] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:34:10,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:34:10,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-28 23:34:10,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30592794] [2023-11-28 23:34:10,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:34:10,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 23:34:10,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:34:10,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 23:34:10,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:34:10,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 428 out of 531 [2023-11-28 23:34:10,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 464 transitions, 965 flow. Second operand has 3 states, 3 states have (on average 430.0) internal successors, (1290), 3 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:10,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:34:10,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 428 of 531 [2023-11-28 23:34:10,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:34:33,507 INFO L124 PetriNetUnfolderBase]: 28311/130382 cut-off events. [2023-11-28 23:34:33,508 INFO L125 PetriNetUnfolderBase]: For 3602/3602 co-relation queries the response was YES. [2023-11-28 23:34:34,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169457 conditions, 130382 events. 28311/130382 cut-off events. For 3602/3602 co-relation queries the response was YES. Maximal size of possible extension queue 2672. Compared 2147953 event pairs, 27281 based on Foata normal form. 1/119141 useless extension candidates. Maximal degree in co-relation 169423. Up to 38401 conditions per place. [2023-11-28 23:34:35,015 INFO L140 encePairwiseOnDemand]: 528/531 looper letters, 51 selfloop transitions, 2 changer transitions 0/473 dead transitions. [2023-11-28 23:34:35,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 473 transitions, 1089 flow [2023-11-28 23:34:35,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 23:34:35,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-28 23:34:35,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1338 transitions. [2023-11-28 23:34:35,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.839924670433145 [2023-11-28 23:34:35,017 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1338 transitions. [2023-11-28 23:34:35,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1338 transitions. [2023-11-28 23:34:35,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:34:35,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1338 transitions. [2023-11-28 23:34:35,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 446.0) internal successors, (1338), 3 states have internal predecessors, (1338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:35,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:35,022 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:35,022 INFO L175 Difference]: Start difference. First operand has 466 places, 464 transitions, 965 flow. Second operand 3 states and 1338 transitions. [2023-11-28 23:34:35,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 473 transitions, 1089 flow [2023-11-28 23:34:35,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 473 transitions, 1087 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 23:34:35,033 INFO L231 Difference]: Finished difference. Result has 467 places, 465 transitions, 975 flow [2023-11-28 23:34:35,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=963, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=975, PETRI_PLACES=467, PETRI_TRANSITIONS=465} [2023-11-28 23:34:35,034 INFO L281 CegarLoopForPetriNet]: 475 programPoint places, -8 predicate places. [2023-11-28 23:34:35,034 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 465 transitions, 975 flow [2023-11-28 23:34:35,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 430.0) internal successors, (1290), 3 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:35,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:34:35,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:34:35,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-28 23:34:35,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:34:35,235 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-28 23:34:35,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:34:35,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1996967251, now seen corresponding path program 1 times [2023-11-28 23:34:35,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:34:35,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402191128] [2023-11-28 23:34:35,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:34:35,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:34:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:34:35,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:34:35,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:34:35,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402191128] [2023-11-28 23:34:35,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402191128] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:34:35,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073473665] [2023-11-28 23:34:35,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:34:35,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:34:35,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:34:35,301 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:34:35,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-28 23:34:35,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:34:35,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 23:34:35,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:34:35,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:34:35,444 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 23:34:35,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 23:34:35,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073473665] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 23:34:35,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 23:34:35,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-28 23:34:35,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062796967] [2023-11-28 23:34:35,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 23:34:35,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-28 23:34:35,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:34:35,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-28 23:34:35,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-28 23:34:35,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 425 out of 531 [2023-11-28 23:34:35,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 465 transitions, 975 flow. Second operand has 10 states, 10 states have (on average 427.1) internal successors, (4271), 10 states have internal predecessors, (4271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:35,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:34:35,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 425 of 531 [2023-11-28 23:34:35,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:34:56,006 INFO L124 PetriNetUnfolderBase]: 22022/117589 cut-off events. [2023-11-28 23:34:56,007 INFO L125 PetriNetUnfolderBase]: For 1658/1658 co-relation queries the response was YES. [2023-11-28 23:34:56,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148119 conditions, 117589 events. 22022/117589 cut-off events. For 1658/1658 co-relation queries the response was YES. Maximal size of possible extension queue 2336. Compared 1951988 event pairs, 21001 based on Foata normal form. 2/108069 useless extension candidates. Maximal degree in co-relation 148054. Up to 29669 conditions per place. [2023-11-28 23:34:57,377 INFO L140 encePairwiseOnDemand]: 525/531 looper letters, 47 selfloop transitions, 9 changer transitions 0/473 dead transitions. [2023-11-28 23:34:57,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 473 transitions, 1105 flow [2023-11-28 23:34:57,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-28 23:34:57,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-28 23:34:57,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3883 transitions. [2023-11-28 23:34:57,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8125130780498012 [2023-11-28 23:34:57,381 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3883 transitions. [2023-11-28 23:34:57,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3883 transitions. [2023-11-28 23:34:57,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:34:57,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3883 transitions. [2023-11-28 23:34:57,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 431.44444444444446) internal successors, (3883), 9 states have internal predecessors, (3883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:57,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 531.0) internal successors, (5310), 10 states have internal predecessors, (5310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:57,389 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 531.0) internal successors, (5310), 10 states have internal predecessors, (5310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:57,389 INFO L175 Difference]: Start difference. First operand has 467 places, 465 transitions, 975 flow. Second operand 9 states and 3883 transitions. [2023-11-28 23:34:57,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 473 transitions, 1105 flow [2023-11-28 23:34:57,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 473 transitions, 1103 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-28 23:34:57,397 INFO L231 Difference]: Finished difference. Result has 477 places, 471 transitions, 1023 flow [2023-11-28 23:34:57,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=973, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1023, PETRI_PLACES=477, PETRI_TRANSITIONS=471} [2023-11-28 23:34:57,399 INFO L281 CegarLoopForPetriNet]: 475 programPoint places, 2 predicate places. [2023-11-28 23:34:57,399 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 471 transitions, 1023 flow [2023-11-28 23:34:57,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 427.1) internal successors, (4271), 10 states have internal predecessors, (4271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:57,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:34:57,400 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:34:57,404 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-28 23:34:57,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-28 23:34:57,601 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (and 24 more)] === [2023-11-28 23:34:57,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:34:57,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1635301101, now seen corresponding path program 2 times [2023-11-28 23:34:57,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:34:57,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004841675] [2023-11-28 23:34:57,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:34:57,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:34:57,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:34:57,667 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-28 23:34:57,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:34:57,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004841675] [2023-11-28 23:34:57,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004841675] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 23:34:57,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893623242] [2023-11-28 23:34:57,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 23:34:57,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 23:34:57,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:34:57,669 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 23:34:57,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3d62e1df-e1be-4185-a891-73333fa48969/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-28 23:34:57,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 23:34:57,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 23:34:57,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-28 23:34:57,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 23:34:57,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-28 23:34:57,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-11-28 23:34:58,018 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:34:58,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-11-28 23:34:58,051 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-28 23:34:58,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-11-28 23:34:58,083 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-28 23:34:58,083 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 23:34:58,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893623242] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:34:58,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 23:34:58,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2023-11-28 23:34:58,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644781766] [2023-11-28 23:34:58,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:34:58,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:34:58,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:34:58,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:34:58,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-28 23:34:59,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 378 out of 531 [2023-11-28 23:34:59,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 471 transitions, 1023 flow. Second operand has 6 states, 6 states have (on average 379.8333333333333) internal successors, (2279), 6 states have internal predecessors, (2279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:34:59,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:34:59,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 378 of 531 [2023-11-28 23:34:59,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand